During an assessment of the cranial nerves, the nurse finds the following: Asymmetry when the client frowns, uneven lifting of the eyebrows, sagging of the lower eyelids, and an escape of air from the right side when the client puffs their cheeks. This would indicate the dysfunction of which of the cranial nerves?
Motor component of IV (Trochlear)
Motor and sensory components of XI (Accessory)
Motor component of VII (Facial)
Motor component of X (Vagus) and sensory component of XII (Hypoglossal)
The Correct Answer is C
A) Motor component of IV (Trochlear): The trochlear nerve primarily controls the superior oblique muscle of the eye, which is responsible for downward and lateral eye movements. The findings described do not relate to eye movement and therefore do not indicate dysfunction of this nerve.
B) Motor and sensory components of XI (Accessory): The accessory nerve innervates the sternocleidomastoid and trapezius muscles, primarily affecting head rotation and shoulder elevation. The symptoms noted in the assessment do not pertain to these muscle functions, so this option is not correct.
C) Motor component of VII (Facial): The signs of asymmetry in frowning, uneven eyebrow lifting, sagging eyelids, and air escaping when puffing the cheeks are characteristic of dysfunction in the facial nerve (cranial nerve VII). This nerve controls the muscles of facial expression, and impairment would lead to the described asymmetrical movements.
D) Motor component of X (Vagus) and sensory component of XII (Hypoglossal): The vagus nerve affects autonomic functions and some swallowing muscles, while the hypoglossal nerve controls tongue movements. Neither nerve is primarily responsible for the facial expressions described in the assessment findings, making this option incorrect.
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View Related questions
Correct Answer is B
Explanation
A) This would indicate pitting edema: Tenting is not indicative of pitting edema, which is characterized by a depression left in the skin after pressure is applied. Tenting specifically refers to the skin's elasticity and is assessed by pinching the skin, observing how quickly it returns to its normal position.
B) This may indicate dehydration, but might not be reliable in an older adult: Tenting is often a sign of dehydration, as it reflects decreased skin elasticity. However, in elderly individuals, skin changes due to aging (like reduced elasticity and moisture) may make this assessment less reliable. Factors such as medications, health status, and overall skin integrity can also influence this observation, making it necessary to consider other indicators of hydration.
C) This means the client is well hydrated: Tenting does not indicate adequate hydration. In fact, it typically suggests the opposite, as well-hydrated skin should return to normal quickly after being pinched.
D) This indicates peripheral neuropathy: While peripheral neuropathy can affect skin and tissue integrity, tenting specifically relates to skin turgor and elasticity rather than nerve function. Tenting is not a direct indicator of neuropathy; other assessments would be needed to evaluate nerve health.
Correct Answer is C
Explanation
A) Talking in a loud voice: While this may indicate some level of distress or confusion, it does not necessarily signal a specific neurological deficit. Clients may raise their voice for various reasons unrelated to neurological issues.
B) Grimacing with movement: This could suggest discomfort or pain but is not an explicit indicator of neurological impairment. Grimacing can occur for many reasons, including musculoskeletal issues or emotional responses, and does not specifically necessitate a focused neurological assessment.
C) Asymmetry of the client's smile: This finding is significant and raises concerns about potential neurological issues, such as a stroke or Bell's palsy. Facial asymmetry may indicate weakness or dysfunction in the cranial nerves responsible for facial movement, warranting a more thorough neurological examination to assess for underlying causes.
D) Inability to follow directions: While this may point to confusion or cognitive impairment, it is a more general indicator and could result from various factors, including anxiety or lack of understanding. It does not specifically highlight a localized neurological deficit as clearly as facial asymmetry does.